| Author |
Message |
Steve Reyes
| | Posted on Saturday, January 13, 2001 - 4:42 am: | |
Thanks for the suggestions on correcting tapping noise. I coated the belts, waited for another cool day, starter the car up and there was no problem. Thank you very much. I hope I can be of help one day.
Steve R. |
CraigFL
| | Posted on Sunday, January 07, 2001 - 4:42 pm: | |
I appreciate you clarifying this since we seemed to have lost all the good information from expensivecar.com
I was only trying to recite that there was controversy... which didn't make any difference to me since I use UFI |
Steve Magnusson
| | Posted on Sunday, January 07, 2001 - 12:46 pm: | |
CraigFL,
Please forgive me -- I know your response was sent in good faith, but I must clarify something about the "standpipe". The Anti-drain-back valve is what keeps the oil from draining out of the pump and back into the sump (hopefully preventing the additional time required for pump/pick-up tube repriming). The standpipe (a clever suggestion by Baldwin I'm told) actual traps a volume of oil inside the oil filter case (downstream of the ADV) preventing it from draining out towards the motor side of things after shut-off. If you're interested I have a jpeg showing the cross-section of a standpipe and non-standpipe oil filter after shut-off in an inverted configuration at:
http://albums.photopoint.com/j/View?u=972829&a=8468088&p=37335280
One thing to note is that the standpipe is effective at trapping this extra oil only if the ADV is also working well. I've personally removed many "empty" Frams from my ex-308 during oil changes, and Alan Ing took some fairly frightening shots of a (rather poor) Fram ADV, so consequently, I changed over to the Baldwin B253.
JMHOs,
Steve M. |
'75 308 GT4 (Peter)
| | Posted on Sunday, January 07, 2001 - 11:42 am: | |
Baldwin B253 filters, they have a tall standpipe in them too. |
CraigFL
| | Posted on Sunday, January 07, 2001 - 9:52 am: | |
FWIW
There was some debate about oil filters on expensivecar.com when it was available... There seemed to be concerns that any filter, other than UFI or Fram didn't have the proper standpipe for the "upside down" mounting in Ferraris. Without the standpipe, oil drained back into the sump so there was no reserve/prime for the initial startup of the engine. |
Kurt Kjelgaard, 328
| | Posted on Sunday, January 07, 2001 - 4:59 am: | |
Check your oilfilter (read: change). The anti drain back valve is probably not able to keep the oil in the filter. The oilfilter will drain during standstill and when starting up, it takes time to fill the filter again. Not until the filter is filled will you have normal pressure on the rest of the system, hence the late pressure indication. With no or little pressure, the engine will sound different because the oil is not taking up slack between the moving parts.
Good luck
brgds Kurt |
'75 308 GT4 (Peter)
| | Posted on Saturday, January 06, 2001 - 6:38 pm: | |
Yes, I had the same thing. Disappeared shortly after. I did brush on belt dressing and the sound never came back. Steve, when you wrote that "metallic" sound I immediately took notice! At the time I thought a bearing went, but when the sound was intermediate, I knew it was something else (a bearing will make constant noise). |
Steve Magnusson
| | Posted on Saturday, January 06, 2001 - 5:51 pm: | |
Hi Steve -- I know this is going to sound crazy, but try a little (spray) belt dressing (e.g., Permatex brand) on the AC V-belt as an initial experiment (it's cheap and it doesn't require any disassembly). Another ListMember and myself both had the AC V-belt on our 308s making a remarkably "metallic" and periodic ticking noise that would diminish as the AC V-belt heated up after start-up. Just a thought...
Steve M. |
Steve Reyes
| | Posted on Saturday, January 06, 2001 - 4:46 pm: | |
I have a 78 308 GTS and upon starup today I heard a loud tap that gradually subsided after about 3-5 minutes. Could not tell exactly where it came from and it did not sound like the valves. I did notice that it took the oil pressure indicator to go to normal pressure after about 15 seconds. Noise eventually went away, drove for about 30 minutes with no problem. Any input please.
Steve |
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